SaaS 2028 Rule of 40 Projection
Rule of 40: ARR growth % + FCF margin % = ≥40% target. 2028 SaaS reality: pure growth focus over. Investors demand efficient growth post-2023 reset.
| ARR growth | — |
| FCF margin | — |
| Rule of 40 score | — |
| Tier | — |
Rule of 40: SaaS growth rate + FCF margin = ≥40% for investable companies. 2028 market reality: post-2023 valuation reset, investors demand profitable growth. Pure growth-at-all-costs no longer rewarded. Elite SaaS: Rule of 60+ (e.g., Snowflake, MongoDB during peak years).
Why Rule of 40 Matters 2028
VC + PE evaluation: instead of pure revenue multiple, they layer Rule of 40 to assess growth quality. Same $50M ARR company at Rule of 60 worth 3-5x more than at Rule of 20. Bessemer Cloud Index tracks Rule of 40 publicly.
Tradeoffs Within Rule
40% growth + 0% margin = 40 (acceptable). 20% growth + 20% margin = 40 (acceptable). 10% growth + 30% margin = 40 (mature SaaS, acceptable). Different stages, same score. Best investor reception varies by stage + sector.
How to Improve
Growth side: NPS upsells, ABM expansion, partnerships, new vertical. Margin side: reduce CAC payback (improve onboarding), automate customer support (AI, self-service), tighten engineering headcount efficiency. Don't sacrifice retention for margin — NRR > 110% is non-negotiable.
Last updated May 2026. Sources: Bessemer.